package com.app.datrock;
 

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.Iterator;

import org.apache.http.HttpEntity;
import org.apache.http.HttpResponse;
import org.apache.http.NameValuePair;
import org.apache.http.client.HttpClient;
import org.apache.http.client.entity.UrlEncodedFormEntity;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.message.BasicNameValuePair;
import org.json.JSONArray;
import org.json.JSONObject;

import android.animation.Animator;
import android.animation.AnimatorListenerAdapter;
import android.annotation.TargetApi;
import android.app.Activity;
import android.app.AlertDialog;
import android.content.DialogInterface;
import android.content.Intent;
import android.os.AsyncTask;
import android.os.Build;
import android.os.Bundle;
import android.text.TextUtils;
import android.view.KeyEvent;
import android.view.Menu;
import android.view.View;
import android.view.inputmethod.EditorInfo;
import android.widget.EditText;
import android.widget.TextView;
import android.widget.Toast;

import com.web.utility.RestClient;

/**
 * Activity which displays a login screen to the user, offering registration as
 * well.
 */
public class DatrockLogin extends Activity {
	/**
	 * A dummy authentication store containing known user names and passwords.
	 * TODO: remove after connecting to a real authentication system.
	 */

	/**
	 * The default email to populate the email field with.
	 */
	public static final String EXTRA_EMAIL = "com.example.android.authenticatordemo.extra.EMAIL";

	/**
	 * Keep track of the login task to ensure we can cancel it if requested.
	 */
	private UserLoginTask mAuthTask = null;

	// Values for email and password at the time of the login attempt.
	private String mEmail;
	private String mPassword;

	// UI references.
	private EditText mEmailView;
	private EditText mPasswordView;
	private View mLoginFormView;
	private View mLoginStatusView;
	private TextView mLoginStatusMessageView;

	
	//--------------------------------------------------

	
	private boolean login;
	
	@Override
	protected void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);

		setContentView(R.layout.activity_datrock_login);
		

		// Set up the login form.
		mEmail = getIntent().getStringExtra(EXTRA_EMAIL);
		mEmailView = (EditText) findViewById(R.id.email);
		mEmailView.setText(mEmail);

		mPasswordView = (EditText) findViewById(R.id.password);
		mPasswordView
				.setOnEditorActionListener(new TextView.OnEditorActionListener() {
					@Override
					public boolean onEditorAction(TextView textView, int id,
							KeyEvent keyEvent) {
						if (id == R.id.login || id == EditorInfo.IME_NULL) {
							attemptLogin();
							return true;
						}
						return false;
					}
				});

		mLoginFormView = findViewById(R.id.login_form);
		mLoginStatusView = findViewById(R.id.login_status);
		mLoginStatusMessageView = (TextView) findViewById(R.id.login_status_message);

		findViewById(R.id.sign_in_button).setOnClickListener(
				new View.OnClickListener() {
					@Override
					public void onClick(View view) {
						attemptLogin();
					}
				});
	}

	@Override
	public boolean onCreateOptionsMenu(Menu menu) {
		super.onCreateOptionsMenu(menu);
		getMenuInflater().inflate(R.menu.activity_datrock_login, menu);
		return true;
	}

	 void login(){
		 
	    try{            
	          
	    	/*
	        httpclient=new DefaultHttpClient();
	        httppost= new HttpPost("127.0.0.1/datrockapp/index.php"); // make sure the url is correct.
	        
	        //cookie handling
	        //httpclient.getCookieStore().addCookie();
	        
	        //add your data
	        nameValuePairs = new ArrayList<NameValuePair>(2);
	        // Always use the same variable name for posting i.e the android side variable name and php side variable name should be similar, 
	        nameValuePairs.add(new BasicNameValuePair("username",mEmailView.getText().toString().trim()));  // $Edittext_value = $_POST['Edittext_value'];
	        nameValuePairs.add(new BasicNameValuePair("password",mPasswordView.getText().toString().trim())); 
	        httppost.setEntity(new UrlEncodedFormEntity(nameValuePairs));
	        //Execute HTTP Post Request
	        response=httpclient.execute(httppost);
	        // edited by James from coderzheaven.. from here....
	        ResponseHandler<String> responseHandler = new BasicResponseHandler();
	        final String response = httpclient.execute(httppost, responseHandler);
	        System.out.println("Response : " + response); 
	        */
	    	RestClient restclient = new RestClient();
	    	login = restclient.webLogin(mEmailView.getText().toString().trim(),mPasswordView.getText().toString().trim());
	    	
	    	
	         
	        if(login){
	            runOnUiThread(new Runnable() {
	                public void run() {
	                    Toast.makeText(DatrockLogin.this,"Login Success", Toast.LENGTH_SHORT).show();
	                }
	            });
	             
	            startActivity(new Intent(DatrockLogin.this, DatrockSplashScreen.class));
	
	        }else{
	            showAlert();                
	        }
	         
	    }catch(Exception e){
	        //dialog.dismiss();
	        System.out.println("Exception : " + e.getMessage());
	    }
	 }	
	 
	 public void showAlert(){

		 DatrockLogin.this.runOnUiThread(new Runnable() {
	            public void run() {
	                AlertDialog.Builder builder = new AlertDialog.Builder(DatrockLogin.this);
	                builder.setTitle("Login Error.");
	                builder.setMessage("User not Found.")  
	                       .setCancelable(false)
	                       .setPositiveButton("OK", new DialogInterface.OnClickListener() {
	                           public void onClick(DialogInterface dialog, int id) {
	                           }
	                       });                     
	                AlertDialog alert = builder.create();
	                alert.show();               
	            }
	        });
	 }
	
	/**
	 * Attempts to sign in or register the account specified by the login form.
	 * If there are form errors (invalid email, missing fields, etc.), the
	 * errors are presented and no actual login attempt is made.
	 */
	public void attemptLogin() {
		if (mAuthTask != null) {
			return;
		}

		// Reset errors.
		mEmailView.setError(null);
		mPasswordView.setError(null);

		// Store values at the time of the login attempt.
		mEmail = mEmailView.getText().toString();
		mPassword = mPasswordView.getText().toString();

		boolean cancel = false;
		View focusView = null;

		// Check for a valid password.
		if (TextUtils.isEmpty(mPassword)) {
			mPasswordView.setError(getString(R.string.error_field_required));
			focusView = mPasswordView;
			cancel = true;
		} else if (mPassword.length() < 4) {
			mPasswordView.setError(getString(R.string.error_invalid_password));
			focusView = mPasswordView;
			cancel = true;
		}

		// Check for a valid email address.
		if (TextUtils.isEmpty(mEmail)) {
			mEmailView.setError(getString(R.string.error_field_required));
			focusView = mEmailView;
			cancel = true;
		} else if (!mEmail.contains("@")) {
			mEmailView.setError(getString(R.string.error_invalid_email));
			focusView = mEmailView;
			cancel = true;
		}

		if (cancel) {
			// There was an error; don't attempt login and focus the first
			// form field with an error.
			focusView.requestFocus();
		} else {
			// Show a progress spinner, and kick off a background task to
			// perform the user login attempt.
			mLoginStatusMessageView.setText(R.string.login_progress_signing_in);
			showProgress(true);
			mAuthTask = new UserLoginTask();
			mAuthTask.execute((Void) null);

		}
	}

	/**
	 * Shows the progress UI and hides the login form.
	 */
	@TargetApi(Build.VERSION_CODES.HONEYCOMB_MR2)
	private void showProgress(final boolean show) {
		// On Honeycomb MR2 we have the ViewPropertyAnimator APIs, which allow
		// for very easy animations. If available, use these APIs to fade-in
		// the progress spinner.
		if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB_MR2) {
			int shortAnimTime = getResources().getInteger(
					android.R.integer.config_shortAnimTime);

			mLoginStatusView.setVisibility(View.VISIBLE);
			mLoginStatusView.animate().setDuration(shortAnimTime)
					.alpha(show ? 1 : 0)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginStatusView.setVisibility(show ? View.VISIBLE
									: View.GONE);
						}
					});

			mLoginFormView.setVisibility(View.VISIBLE);
			mLoginFormView.animate().setDuration(shortAnimTime)
					.alpha(show ? 0 : 1)
					.setListener(new AnimatorListenerAdapter() {
						@Override
						public void onAnimationEnd(Animator animation) {
							mLoginFormView.setVisibility(show ? View.GONE
									: View.VISIBLE);
						}
					});
		} else {
			// The ViewPropertyAnimator APIs are not available, so simply show
			// and hide the relevant UI components.
			mLoginStatusView.setVisibility(show ? View.VISIBLE : View.GONE);
			mLoginFormView.setVisibility(show ? View.GONE : View.VISIBLE);
		}
	}

	/**
	 * Represents an asynchronous login/registration task used to authenticate
	 * the user.
	 */
	public class UserLoginTask extends AsyncTask<Void, Void, Boolean> {
		
		private HttpClient httpclient = new DefaultHttpClient();
		private HttpPost httppost;
		
		//Response & Entity
		private HttpResponse httpresponse;
		private HttpEntity httpentity;
		
		private ArrayList<NameValuePair>	namevaluepairs = new ArrayList<NameValuePair>();
		
		@Override
		protected Boolean doInBackground(Void... params) {
			// TODO: attempt authentication against a network service.
			String[] credentials = null;

			try {
				httppost	= new HttpPost("http://192.168.1.94/datrockapp/index.php");//ip from host (localhost)
				
				//add values in pair array
				namevaluepairs.add(new BasicNameValuePair("username", mEmailView.getText().toString()));
				namevaluepairs.add(new BasicNameValuePair("password", mPasswordView.getText().toString()));
				
				//Set request data
				httppost.setEntity(new UrlEncodedFormEntity(namevaluepairs));
				
				//Execute webrequest
				httpresponse	=	httpclient.execute(httppost);
				
				if(httpresponse.getStatusLine().getStatusCode() == 200){
					httpentity	=	httpresponse.getEntity();
					
					if(httpentity != null){
						
						InputStream instream	=	httpentity.getContent();
						
						JSONObject jsonResponse		=	new JSONObject(convertStreamToString(instream));//convertStreamToString(instream)
						
						//Get values from JSON object
						credentials	= new String[1]; //jsonResponse.length()
						credentials[0]	=	jsonResponse.getString("username") + ":" + jsonResponse.getString("password");
				       /* Iterator<?> keys = jsonResponse.keys();
				        
				        int i = 0;
				        while( keys.hasNext() ){
				            String key = (String)keys.next();
				            
				            credentials[i]	=	 credentials[i] + jsonResponse.getString(key);
				            
				            if(keys.hasNext()){
				            	credentials[i]	= credentials[i] + ":";
				            }
				        }					*/	

					}
				}
				
			} catch (Exception e) {
				return false;
			}

			for (String credential : credentials) {
				String[] pieces = credential.split(":");
				if (pieces[0].equals(mEmail)) {
					// Account exists, return true if the password matches.
					return pieces[1].equals(mPassword);
				}
			}

			// TODO: register the new account here.
			return true;
		}

		@Override
		protected void onPostExecute(final Boolean success) {
			mAuthTask = null;
			showProgress(false);

			if (success) {
				finish();
			} else {
				mPasswordView
						.setError(getString(R.string.error_incorrect_password));
				mPasswordView.requestFocus();
			}
		}

		@Override
		protected void onCancelled() {
			mAuthTask = null;
			showProgress(false);
		}
		
	    private String convertStreamToString(InputStream is) {
	        /*
	         * To convert the InputStream to String we use the BufferedReader.readLine()
	         * method. We iterate until the BufferedReader return null which means
	         * there's no more data to read. Each line will appended to a StringBuilder
	         * and returned as String.
	         */
	        BufferedReader reader = new BufferedReader(new InputStreamReader(is));
	        StringBuilder sb = new StringBuilder();
	 
	        String line = null;
	        try {
	            while ((line = reader.readLine()) != null) {
	                sb.append(line + "\n");
	            }
	        } catch (IOException e) {
	            e.printStackTrace();
	        } finally {
	            try {
	                is.close();
	            } catch (IOException e) {
	                e.printStackTrace();
	            }
	        }
	        return sb.toString();
	    }		
	}
}
